G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/122 (2006.01) G02B 5/124 (2006.01)
Patent
CA 2171636
A retroreflective cube corner article which is a replica of a directly machined substrate in which a plurality of geometric structures including cube corner elements are machined in the substrate using only two sets of parallel grooves (205,217). At least two of the grooves in at least one of the groove sets are at a different groove depth.
Article à trièdres trirectangles rétroréfléchissants se présentant sous forme d'une copie d'un substrat directement usiné, dans lequel une pluralité de structures géométriques comprenant des trièdres trirectangles sont usinées dans ledit substrat seulement à l'aide de deux ensembles de rainures (205, 217) parallèles. Au moins deux des rainures d'au moins un des ensenbles de rainures se situent à une profondeur différente.
Benson Gerald M.
Smith Kenneth L.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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